Mechanical movement



F. L. FREER.

MECHANICAL MOVEMENL. APPLICATION FILED AUG-l. i918.

. 1 311917 Patented Oct. 7,1919.

2 SHEETQ -SHEET l.

F. L. FREER.

MECHANICAL MOVEMENT.

APPLICATION FILED AUG-1.1918.

Patented Oct. 7, M19.

2 SHEETSSHEET 2.

mr/w m FRANK L. FREEZE, BRONX, NEW YORK.

MECHANICAL MOVEMENT.

Application filed August 1,

To all whom it may concern:

Be it known that I, FRANK L. FREER, a citizen of the United States, residing at Bronx, in the county of New York and State of New York, have invented certain new and useful Improvements in Mechanical Movements, of which the following is a specification. I This invention relates to machine elements, and more especially to mechanical movements; and the object of the same is to produceimproved means for converting the alternating reciprocations of two pistons into rotary movement of the main shaft.

The invention comprises a main and an auxiliary shaft used together and rotating simultaneously and oppositely, each shaft having a crank within its length, and lever mechanism'connecting the pltmen of the two pistons with said cranks, all as hereinafter more fully described and claimed and as shown in the drawings wherein Figure 1 is a vertical sectional view of an engine constructed with this invention between its cylinders and the main shaft.

Fig. 2 is a horizontal section, giving a plan view of the two shafts and the levers thereon,

Fig. 3 is an enlarged detail partly in sec-- tion, showing one lever and its main bearing and block,

Fig. 4 is an enlarged perspective detail of one block.

I have shown my invention as applied to a two-cylinder engine whose details are not important. The letters C designate the cylinders within which move pistons P having piston rods R, and the purpose of the inven-' tion is to communicate the reciprocating motion of said pistons to a main shaft M which preferably has a fly wheel F. If this be an internal combustion engine, valves and ignition mechanism must be provided, and the cylinders will be jacketed as shown at J but my invention is equally applicable to engines of other types and perhaps to those using steam, and therefore such details are not amplified herein. The main shaft M is journaled in appropriate bearings alongside a second or auxiliary shaft-1, and one end of the main shaft may carry-a fly wheel F while the other end is geared as at 2 to the auxiliary shaft so that these shafts shall rotate simultaneously and at equal speed but in opposite directions. The main shaft M has a crank 3, and the auxiliary shaft 1 has a Specification of Letters Patent.

Patented Oct. 7, 1919.

1918. Serial No. 247,833.

11 mounted on the opposite crank 4. A secr'ond lever 15 is pivoted at 17 to the right hand pitman rod as shown in Fig. 1, and has a bearing 16 mounted on the crank 4 and is reduced at 18 so that it may slide through a hole in a second block 20 which in turn is mounted on the first crank 3.

With the parts thus constructed and the shafts M and l rotating in opposite directions as indicated by the arrows in Fig. 1, as the right hand piston and its pitman rod descends the right hand lever 15 swings downward at the point 17, and its bearing 16 causes the right hand crank t to descend while the inner end 18 of this lever rises and carries with it the block 20 so as to cause the left hand crank 3 to ascend. Just at the time that these two cranks reach a horizontal position where both project to the right of their shafts, the'lever will be horizontal and the piston P will'have made half its downward stroke. Continuing throughout the length of the cylinder 0, such stroke causes thelever to carry the cranks around their lowest points of movement and up on the other sides of their shafts respectively. Thus the piston is given a long stroke and its power is applied with great force to the shafts, which being geared together, communicate their joint motion to thefiy wheel and to any work which is to be performed.

I have found this mechanical movement extremely efiicacious in engines, and especially in internal combustion engines using a weak or greatly attenuated explosive fluid as the motive element, but I do not wish to be limited in that particular. Doubtless the mechanism will be contained within an oil case 0 shown in Fig. 1, and it is not necessary that the gearing 2 shall be on the outside of this case, although it might be, as shown in Fig. 2. Other details may be left to the manufacturer.

The foregoing description and the drawings have reference to what may be considered the preferred, or approved form of my invention. It is to be understood that I may make such changes in construction and arrangement and combination of parts, ma-

terials, dimensions, et cetera, as may prove expedient and fall Within the scope of the appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

A mechanical movement comprising a pair of crank shafts, means connecting the same for rotation in unison and oppositely, a pair of blocks, one on each crank shaft, each having an opening extending therethrough at right angles to the crank portion of the shaft and ofi's'et therefrom, a pair of levers each having a recess to receive one 'ofthe Cl k portions, a plate on each lever coveringthe '15 recess thereof to secure the crank shaftin l;

place, afreduced cylindrical portion-on each cable elements for said connecting'rod;

In testimony whe'reofmy signature" 7 FRANK L; FREER; 

